Through Tamura’s original technology our current sensors feature: fast response time; high frequency operation with minimal core temperature rise; excellent immunity to dv/dt noise; magnetic field stability; and sulfur-proof options depending on customer application requirements.Accuracy and Current
|Built-in Primary Conductor
OUTLINES【Circuit system Description】
The current sensor is a sensor to measure the current as its name. However, The current is various. There is a current value up to 10k amperes treated in the power plant from 1mA, and the shape of current waves also has AC, DC, and AC + DC. Since a method and a structure the best in each measuring object are different, there are also various current sensors. Tamura supplies the sensor using the Hall-Effect system for measuring the current value from several amperes to several kilo-ampere.
The Hall-Effect current sensor measures the magnetic flux produced in proportion to the primary current without any direct contact with the primary circuit; the combination of the Hall element and magnetic circuit provide excellent solution for measuring AC/DC current wiht galvanic isolation and zero insertion loss.
The diagram in Figure (1) depicts the Hall current sensor basic principle. The magnetic flux produced in proportion to the primary current, If, induced in the magnetic circuit, passes through the Hall element inserted in the gap of the magnetic circuit resulting in a potential difference, Vh, expressed by the following formula:
Current control and detection of over-current in various types of inverters
Used for general-purpose inverter, various types of power conversion equipment to control and to detect over-current. Also used to measure DC current from the battery.
・Various types of inverters(CVCF, vector),Industiral robots, automation,devices, NC
・UPS, Elevator, Laser Cutting Machines, Welding Machines, Various types of Regulated Power Supply
・Solar power generation systems, Wind power systems, Fuel cell systems
Measurement of DC, AC ( kHz range), & complex current (AC+DC). Our current range is 2A to 1500A in various mechanical configurations.
Galvanic isolation with many UL compliant configurations.
Fast response time